A winding device for ultra-thin copper foil

Abstract

The application discloses a winding device for extremely thin copper foil and relates to the technical field of copper foil winding, which comprises a winding frame, the inner walls of the two sides of the winding frame are rotationally connected with first transmission rollers and second transmission rollers for transmission of the copper foil body, the two sides of the winding frame are provided with rotating discs, one side of the rotating disc is fixedly connected with winding rollers for winding of the copper foil body through bolts, the two sides of the winding frame are provided with displacement components for adjusting the positions of the winding rollers, and the tension during winding of the copper foil body is adjusted through displacement of the winding rollers. In the application, through two-stage cooperation of floating micro compensation and stepping coarse compensation, the winding tension is always stably kept in the safety range of the extremely thin copper foil, and the quality defect conditions such as belt breakage, wrinkle, tensile deformation and the like are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of copper foil winding technology, and more specifically, to a winding device for extremely thin copper foil. Background Technology

[0002] Ultra-thin copper foil typically refers to electrolytic copper foil with a thickness of 6 micrometers or less. It is a core material for high-energy-density power lithium-ion battery negative electrode current collectors and 5G high-frequency and high-speed printed circuit boards. With the rapid development of the new energy and electronic information industries, the trend of copper foil thinning is intensifying, and the application proportion of ultra-thin copper foil with specifications of 4.5 micrometers and even 2 micrometers continues to increase. As the final core step in the copper foil finishing process, the tension control accuracy and operational stability of the winding process directly determine the surface quality, end face neatness, and subsequent processing adaptability of the finished copper foil. However, ultra-thin copper foil has low tensile strength, small plastic deformation threshold, and stringent surface quality requirements, making the control difficulty and precision requirements of its winding process far higher than those of conventional thickness copper foil.

[0003] Existing conventional copper foil winding devices mostly employ a tension control mode with a fixed-position winding shaft and servo motor speed regulation. During the winding process, the diameter of the coil gradually increases as the copper foil continues to wind, causing the winding tension to continuously rise. Furthermore, the tension adjustment response of this type of device is sluggish and fluctuates greatly, making it difficult to adapt to the extremely narrow tension tolerance window of ultra-thin copper foil. This easily leads to problems such as foil wrinkles, plastic stretching and thinning, edge tearing, and even strip breakage. Therefore, there is an urgent need for a winding device for ultra-thin copper foil to solve the above problems. Summary of the Invention

[0004] In view of the problems in the related technologies, the present invention proposes a winding device for ultra-thin copper foil to overcome the above-mentioned technical problems existing in the prior art.

[0005] The technical solution of this invention is implemented as follows: A winding device for ultra-thin copper foil includes a winding frame, on both sides of the inner wall of the winding frame, a first transmission roller and a second transmission roller for driving the copper foil body are rotatably connected, and a rotating disk is provided on both sides of the winding frame, and a winding roller for winding the copper foil body is fixedly connected to one side of the rotating disk by bolts. Both sides of the winding frame are equipped with displacement components for adjusting the position of the winding roller, thereby adjusting the tension of the copper foil body during winding by displacing the winding roller. A floating assembly for adjusting the position of the second drive roller is provided on one side of the winding frame; The inner walls of both sides of the winding rack are fixedly connected with horizontal plates, and the bottom outer wall of the horizontal plates is fixedly connected with distance sensors.

[0006] Preferably, the displacement component includes a second slide groove formed on the inner walls of both sides of the winding frame, a slider is slidably connected inside the second slide groove, the rotating disk is rotatably connected to the slider, a support frame is fixedly connected to one outer wall of the slider, a first motor is fixedly connected to one outer wall of the support frame, and the output end of the first motor is fixedly connected to a rotating disk.

[0007] Preferably, transmission housings are fixedly connected to both outer walls of the winding frame. A second motor is fixedly connected to one outer wall of the transmission housing. A threaded screw is fixedly connected to the output end of the second motor. A threaded sleeve is threadedly connected to the outer circumference of the threaded screw. A second connecting post is fixedly connected to one outer wall of the threaded sleeve. The other end of the second connecting post is fixedly connected to one outer wall of the first motor. Guide posts are fixedly connected to both inner walls of the other transmission housing. A guide cylinder is slidably connected to the outer circumference of the guide post. The guide cylinder is fixedly connected to a first motor via another second connecting post. The first motor is fixedly connected to one outer wall of another slider.

[0008] Preferably, the floating assembly includes a second piston cylinder disposed inside the winding frame, a second piston body slidably connected inside the second piston cylinder, a movable column fixedly connected to one side outer wall of the second piston body, a rotating sleeve fixedly connected to one end of the movable column away from the second piston body, the rotating sleeve being rotatably connected to the second transmission roller, and a first sliding groove being provided on both sides of the inner wall of the winding frame, the rotating sleeve being slidably connected to the first sliding groove.

[0009] Preferably, a circular shell is fixedly connected to one outer wall of the winding frame, a first piston cylinder is fixedly connected to the inner circumference of the circular shell, a first piston body is slidably connected inside the first piston cylinder, a first connecting post is fixedly connected to one outer wall of the first piston body, an air guide pipe is fixedly connected to one outer wall of the second piston cylinder, the end of the air guide pipe away from the second piston cylinder is connected to the first piston cylinder, a one-way air valve is provided on the outer circumference of the air guide pipe, and a deceleration assembly and a swing assembly for opening the one-way air valve are provided inside the circular shell.

[0010] Preferably, the deceleration assembly includes a rotating ring fixedly connected to the outer circumference of the first transmission roller. The outer circumference of the rotating ring is fixedly connected with teeth. The rotating ring meshes with a first gear through the teeth. The first gear is coaxially connected to a second gear. The outer circumference of the second gear meshes with an eighth gear. The eighth gear is coaxially connected to a third gear.

[0011] Preferably, the oscillating assembly includes a fourth gear meshing with the third gear, a fifth gear coaxially connected to the fourth gear, a sixth gear meshing with the outer circumferential wall of the fifth gear, a seventh gear meshing with the outer circumferential wall of the sixth gear, and an oscillating plate coaxially connected to the seventh gear for opening the one-way air valve.

[0012] Preferably, the inner circumference of the circular shell is fixedly connected to a stabilizing plate for ensuring the stable rotation of the first gear, the second gear, the eighth gear, the third gear, and the fourth gear.

[0013] Preferably, a second worm is fixedly connected to the outer circumference of the threaded screw, a second worm gear meshes with the outer circumference of the second worm, a rotating rod is fixedly connected to the inner circumference of the second worm gear, a second bevel gear is fixedly connected to one end of the rotating rod, a first bevel gear meshes with the outer circumference of the second bevel gear, and a fixed shell is fixedly connected to one side of one of the transmission shells.

[0014] Preferably, a second rotating column is fixedly connected to one side of the outer wall of the first bevel gear, a first worm is fixedly connected to the outer circumference of the second rotating column, a first worm gear meshes with the outer circumference of the first worm, a first rotating column is fixedly connected to the inner circumference of the first worm gear, a cylindrical block is fixedly connected to one end of the first rotating column extending into the interior of the circular shell, and a pressure block for pressing the first connecting column is fixedly connected to the outer circumference of the cylindrical block.

[0015] The beneficial effects of this invention are: This invention provides a winding device for ultra-thin copper foil. Through the inclusion of a floating component and a displacement component, a two-stage tension adaptive adjustment system combining floating micro-compensation and stepping coarse compensation is formed. This effectively solves the problem of tension creep caused by the continuous increase in roll diameter during the winding of ultra-thin copper foil. Specifically, during the interval between two stepping displacements, the roll diameter is in a state of slow, slight increase. The device completes real-time passive compensation through a pneumatic floating component. That is, the first drive roller rotates synchronously with the copper foil feed, and its outer rotating ring intermittently meshes with a multi-stage reduction gear set, ultimately driving the swing plate to intermittently open the one-way air valve, allowing the high-pressure gas in the second piston cylinder to slowly leak in. As the air pressure inside the second piston cylinder decreases, the movable column drives the second transmission roller to move tangentially, offsetting the tension increase caused by the slight increase in roll diameter in real time. This keeps the winding tension stable within the narrow tolerance range of the extremely thin copper foil. When the distance sensor detects that the roll diameter has reached the set threshold, the displacement component drives the winding roller to move backward in a large step along the tangential direction, completing the large stroke tension reset. This graded adjustment mode not only fills the compensation blind spot of the step gap, but also avoids the tension oscillation that is easily caused by continuous adjustment. It can effectively prevent defects such as foil wrinkles, plastic stretching, edge tearing, and even strip breakage caused by excessive tension, ensuring the continuous stability of the winding process.

[0016] This invention provides a winding device for ultra-thin copper foil. By adopting an integrated design of displacement drive and floating reset, the device significantly improves operational reliability and adjustment accuracy. During the stepping displacement of the winding roller, the device can simultaneously complete the automatic reset of the floating component. Specifically, while the threaded screw drives the winding roller to translate, the second worm gear on its outer wall simultaneously drives the second worm wheel to rotate. After reversing transmission via a rotating bar and bevel gear set, the first worm gear and the first worm wheel reduce speed, driving the first rotating column to slowly rotate the cylindrical block inside the cylindrical shell. Simultaneously, the pressure block on the outer wall of the cylindrical block presses inward against the first connecting column during rotation, pushing the first piston body inward to slide. The gas in the first piston cylinder is reversed and pushed back into the second piston cylinder through the air guide pipe, causing the second transmission roller to automatically return to its initial equilibrium position. No additional reset drive element or detection sensor is required throughout the process. The pure mechanical linkage ensures that the displacement and reset actions are strictly synchronized, eliminating the risk of electrical control lag and drift. At the same time, the multi-stage gear combination of "front-end deceleration and rear-end acceleration" reduces the opening frequency of the one-way air valve by a large reduction ratio, matching the slow increase rate of the roll diameter and avoiding overcompensation under small roll diameter increments. It also accelerates and amplifies the swing amplitude of the swing plate to ensure the effective adjustment stroke of a single air release, so that the rhythm and accuracy of the floating compensation are perfectly adapted to the micro-tension adjustment requirements of ultra-thin copper foil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall front structure of the present invention.

[0019] Figure 2 For the present invention Figure 1 A magnified structural diagram of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the overall bottom structure of the present invention.

[0021] Figure 4 For the present invention Figure 3 A magnified structural diagram at point B in the middle.

[0022] Figure 5 This is a schematic diagram of the internal structure of the circular shell after cross-section according to the present invention.

[0023] Figure 6 For the present invention Figure 5 A magnified structural diagram at point C.

[0024] Figure 7 This is a schematic diagram of a half-section of the winding frame structure in this invention.

[0025] Figure 8 For the present invention Figure 7 A magnified structural diagram at point D.

[0026] Figure 9 This is a schematic diagram of the overall structure of the circular shell after cross-section.

[0027] Figure 10 For the present invention Figure 9 A magnified structural diagram at point E in the middle.

[0028] Figure 11 This is a schematic diagram of the disassembled structure of the circular shell after cross-section.

[0029] Figure 12 For the present invention Figure 11 A magnified structural diagram at point F in the middle.

[0030] In the picture: 1. Rewinding frame; 2. First drive roller; 3. Copper foil body; 4. Second drive roller; 5. Rewinding roller; 6. Horizontal plate; 7. Round shell; 8. First connecting column; 9. Cylindrical block; 10. Pressure block; 11. Transmission shell; 12. First motor; 13. Support frame; 14. Second connecting column; 15. Fixed shell; 16. First rotating column; 17. First slide groove; 18. Tooth; 19. Movable column; 20. Slider; 21. Distance sensor; 22. Guide column; 23. Guide cylinder; 24. Second slide groove; 25. Rotating disk; 26. Stabilizing plate; 27. First gear; 28. Second... 29. Gear; 30. Eighth gear; 31. Third gear; 32. Fourth gear; 33. First piston cylinder; 34. First piston body; 35. Second rotating column; 36. First worm; 37. First bevel gear; 38. Second bevel gear; 39. Rotating sleeve; 40. Second piston cylinder; 41. Second piston body; 42. Rotating ring; 43. Fifth gear; 44. Sixth gear; 45. Seventh gear; 46. Swing plate; 47. One-way valve; 48. Air guide pipe; 49. Threaded screw; 50. Second worm; 51. Second worm wheel; 52. Rotating rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0032] Please see Figures 1-12A winding device for ultra-thin copper foil includes a winding frame 1. The inner walls of both sides of the winding frame 1 are rotatably connected to a first transmission roller 2 and a second transmission roller 4 for driving the copper foil body 3. A rotating disk 25 is provided on both sides of the winding frame 1. A winding roller 5 for winding the copper foil body 3 is fixedly connected to one side of the rotating disk 25 by bolts. Both sides of the winding frame 1 are provided with displacement components for adjusting the position of the winding roller 5. The tension of the copper foil body 3 is adjusted during winding by the displacement of the winding roller 5. A floating assembly for adjusting the position of the second drive roller 4 is provided on one side of the winding frame 1; Both sides of the winding frame 1 are fixedly connected to the inner walls of the horizontal plates 6, and the bottom outer wall of the horizontal plates 6 is fixedly connected to the distance sensor 21. Through the cooperation of the floating component and the displacement component, the tension of the copper foil body 3 during the winding process can be adaptively adjusted, ensuring that the extremely thin copper foil body 3 will not crack or even break due to tension changes during continuous winding.

[0033] Furthermore, the displacement component includes a second slide groove 24 formed on the inner walls of both sides of the winding frame 1. A slider 20 is slidably connected inside the second slide groove 24. A rotating disk 25 is rotatably connected to the slider 20. A support frame 13 is fixedly connected to one outer wall of the slider 20. A first motor 12 is fixedly connected to one outer wall of the support frame 13. The output end of the first motor 12 is fixedly connected to a rotating disk 25. By sliding the slider 20 smoothly backward along the second slide groove 24, the winding roller 5 is driven to step backward a set distance along the tangent direction of the copper foil winding. This accurately compensates for the shortening of the material path caused by the increase in the roll diameter, allowing the increased winding tension to quickly drop back to the target reference value. At the same time, the displacement process adopts low-speed uniform operation to avoid tension impact caused by instantaneous displacement, which is suitable for the narrow tension tolerance window of ultra-thin copper foil.

[0034] Furthermore, transmission housings 11 are fixedly connected to both outer walls of the winding frame 1. A second motor is fixedly connected to one outer wall of the transmission housing 11. A threaded screw 49 is fixedly connected to the output end of the second motor. A threaded sleeve is threadedly connected to the outer circumference of the threaded screw 49. A second connecting post 14 is fixedly connected to one outer wall of the threaded sleeve. The other end of the second connecting post 14 is fixedly connected to one outer wall of the first motor 12. Guide posts 22 are fixedly connected to both inner walls of the other transmission housing 11. A guide cylinder 23 is slidably connected to the outer circumference of the guide post 22. The guide cylinder 23 is fixedly connected to the first motor 12 through another second connecting post 14. The first motor 12 is fixedly connected to one outer wall of another slider 20. When the distance sensor 21 detects that the thickness of the copper foil body 3 wound by the winding roller 5 reaches the set threshold, the second motor starts and drives the threaded screw 49 to rotate at a constant speed. Through the transmission between the threaded sleeve and the second connecting post 14, the displacement of the slider 20 can be provided.

[0035] Furthermore, the reduction assembly includes a rotating ring 42 fixedly connected to the outer circumference of the first transmission roller 2. Teeth 18 are fixedly connected to the outer circumference of the rotating ring 42. A first gear 27 meshes with the rotating ring 42 through the teeth 18. A second gear 28 is coaxially connected to the first gear 27. An eighth gear 29 meshes with the outer circumference of the second gear 28. A third gear 30 is coaxially connected to the eighth gear 29. The oscillating assembly includes a fourth gear 31 meshing with the third gear 30. A fifth gear 43 is coaxially connected to the fourth gear 31. The outer circumference of the shell 7 is meshed with a sixth gear 44, and the outer circumference of the sixth gear 44 is meshed with a seventh gear 45. The seventh gear 45 is coaxially connected to a swing plate 46 for opening a one-way air valve 47. The inner circumference of the shell 7 is fixedly connected to a stabilizing plate 26 for ensuring the stable rotation of the first gear 27, the second gear 28, the eighth gear 29, the third gear 30, and the fourth gear 31. When the floating assembly is working, due to the continuous transmission of the first transmission roller 2 to the copper foil body 3, the rotating ring 42 can be driven to rotate. When the rotating ring 42 rotates, it is fixed to the... The teeth 18 on its outer circumference intermittently mesh with the first gear 27, thereby driving the first gear 27 to rotate. The first gear 27 and the second gear 28 rotate coaxially, thus driving the second gear 28 to rotate together. Since the inner diameter of the second gear 28 is much smaller than that of the first gear 27 and the eighth gear 29, a good deceleration effect can be achieved, causing the rotation speed of the eighth gear 29 to drop significantly. This avoids excessive displacement of the floating component when the thickness of the copper foil body 3 on the surface of the winding roller 5 changes very little. The rotation of the eighth gear 29 can drive the third gear 30 and the fourth gear 31 to rotate together. When the fourth gear 31 rotates, it can drive the fifth gear 43, which is coaxially connected to it, to rotate together. The rotation of the fifth gear 43 drives the sixth gear 44 and the seventh gear 45 to rotate together. At the same time, the inner diameters of the fifth gear 43, the sixth gear 44 and the seventh gear 45 gradually decrease, thus achieving a good acceleration effect and making the swing amplitude of the swing plate 46 larger. This avoids the situation where the swing plate 46 pushes open the one-way air valve 47 and the displacement distance is too short, causing continuous air leakage.

[0036] Furthermore, a circular shell 7 is fixedly connected to one outer wall of the winding frame 1. A first piston cylinder 32 is fixedly connected to the inner circumference of the circular shell 7. A first piston body 33 is slidably connected inside the first piston cylinder 32. A first connecting post 8 is fixedly connected to one outer wall of the first piston body 33. An air guide pipe 48 is fixedly connected to one outer wall of the second piston cylinder 40. The end of the air guide pipe 48 away from the second piston cylinder 40 is connected to the first piston cylinder 32. A one-way air valve 47 is provided on the outer circumference of the air guide pipe 48. A deceleration assembly and a swing assembly for opening the one-way air valve 47 are provided inside the circular shell 7. The floating assembly includes a second piston cylinder 40 disposed inside the winding frame 1. A second piston body 41 is slidably connected inside the second piston cylinder 40. A movable post 19 is fixedly connected to one outer wall of the second piston body 41. A rotating sleeve 39 is fixedly connected to one end of the movable post 19 away from the second piston body 41. The rotating sleeve 39 is rotatably connected to the second transmission roller 4. The winding frame 1... Both inner walls on both sides are provided with first sliding grooves 17. Rotating sleeve 39 is slidably connected to the first sliding grooves 17. When the one-way air valve 47 is intermittently opened, the high-pressure gas inside the second piston cylinder 40 will flow into the first piston cylinder 32 through the air guide pipe 48. When the high-pressure gas flows into the first piston cylinder 32, it will push the first piston body 33 outward a certain distance. At the same time, as the air pressure inside the second piston cylinder 40 decreases, the movable column 19 will drive the rotating sleeve 39 and the second transmission roller 4 to move along the tangential direction, thereby adaptively reducing the tension of the copper foil body 3 during the winding process. This ensures that the winding tension of the ultra-thin copper foil is always stably maintained within the target micro-tension range within the gap between two step displacements (i.e., through the movement of the displacement component). This effectively counteracts the tension climbing trend caused by the slow increase in roll diameter, avoids the problems of foil wrinkles, plastic stretching and edge tearing caused by excessive tension, and ensures the continuous stability of the winding process and the surface quality of the finished foil.

[0037] Furthermore, a second worm 50 is fixedly connected to the outer circumference of the threaded screw 49. A second worm wheel 51 meshes with the outer circumference of the second worm 50. A rotating rod 52 is fixedly connected to the inner circumference of the second worm wheel 51. A second bevel gear 38 is fixedly connected to one end of the rotating rod 52. A first bevel gear 37 meshes with the outer circumference of the second bevel gear 38. A fixed housing 15 is fixedly connected to one side of a transmission housing 11. A second rotating column 34 is fixedly connected to one side of the outer wall of the first bevel gear 37. A first worm 35 is fixedly connected to the outer circumference of the second rotating column 34. A first worm wheel 36 meshes with the outer circumference of the first worm 35. The outer circumference of the first worm wheel 36... A first rotating column 16 is fixedly connected to the inner wall. A cylindrical block 9 is fixedly connected to one end of the first rotating column 16 that extends into the interior of the cylindrical shell 7. A pressure block 10 for pressing the first connecting column 8 is fixedly connected to the outer circumference of the cylindrical block 9. While the threaded screw 49 rotates, the second worm 50 on its outer circumference rotates synchronously. Through the meshing and reversing transmission of the second worm wheel 51, the rotating rod 52, the second bevel gear 38 and the first bevel gear 37, the second rotating column 34 is driven to rotate in the fixed shell 15. Then, through the reduction transmission of the first worm 35 and the first worm wheel 36, the first rotating column 16 is driven to rotate slowly, thereby driving the cylindrical block 9 inside the cylindrical shell 7 to rotate synchronously. As the cylindrical block 9 rotates, the pressure block 10 on the outer wall presses inward against the first connecting column 8, pushing the first piston body 33 to slide inward along the first piston cylinder 32 to reset. The gas in the first piston cylinder 32 is then pushed into the second piston cylinder 40 through the air guide pipe 48. As the internal air pressure of the second piston cylinder 40 gradually rises, the second piston body 41 pushes the movable column 19 outward, causing the rotating sleeve 39 and the second transmission roller 4 to slide in the opposite direction along the first slide groove 17 to the initial equilibrium position, thus completing the reset of the entire floating assembly and reserving a complete buffer stroke for real-time tension compensation during the next stage of the micro-increase in roll diameter.

[0038] In summary, with the help of the above-mentioned technical solution of the present invention, when in use, the operator starts the first motor 12, which drives the rotating disk 25 and the winding roller 5 to rotate together, thereby realizing the winding of the copper foil body 3. During the winding process of the copper foil body 3, the stability of the winding process can be ensured by the first transmission roller 2 and the second transmission roller 4. As the copper foil body 3 is continuously wound, the diameter of the winding roller 5 will gradually increase. At this time, the winding tension of the copper foil body 3 will also gradually increase. At this time, the tension of the copper foil body 3 can be adaptively adjusted during the winding process by the cooperation of the floating component and the displacement component, ensuring that the extremely thin copper foil body 3 will not crack or even break due to tension changes during continuous winding. Moreover, before the displacement component is activated, the diameter of the winding roller 5 is in a slow and slight increase state, and the tension will continue to rise slightly. During this process, the floating component can realize real-time passive compensation. When the floating amount accumulates to the threshold (that is, the distance sensor 21 detects that the diameter of the winding roller 5 has reached the rated threshold), the displacement component is triggered to perform a large step displacement and the floating mechanism is reset. When the floating component is working, the first transmission roller 2 continuously drives the copper foil body 3, thereby driving the rotating ring 42 to rotate. When the rotating ring 42 rotates, the teeth 18 fixed on its outer circumference will intermittently mesh with the first gear 27, thereby driving the first gear 27 to rotate. The first gear 27 and the second gear 28 rotate coaxially, thereby driving the second gear 28 to rotate together. Since the inner diameter of the second gear 28 is much smaller than that of the first gear 27 and the eighth gear 29, a good deceleration effect can be achieved, causing the rotation speed of the eighth gear 29 to drop significantly, avoiding the copper foil body 3 on the surface of the take-up roller 5 to be damaged. When the thickness of the roll changes very little, the floating component may over-displace. The rotation of the eighth gear 29 can drive the third gear 30 and the fourth gear 31 to rotate together. When the fourth gear 31 rotates, it can drive the fifth gear 43, which is coaxially connected to it, to rotate together. The rotation of the fifth gear 43 can drive the sixth gear 44 and the seventh gear 45 to rotate together. At the same time, the inner diameters of the fifth gear 43, the sixth gear 44 and the seventh gear 45 gradually decrease, which achieves a good acceleration effect and makes the swing plate 46 swing more. This avoids the situation where the swing plate 46 pushes open the one-way air valve 47 and the displacement distance is too short, resulting in continuous air leakage. When the one-way valve 47 is intermittently opened, the high-pressure gas inside the second piston cylinder 40 flows into the first piston cylinder 32 through the air guide pipe 48. When the high-pressure gas flows into the first piston cylinder 32, it pushes the first piston body 33 outward a certain distance. At the same time, as the air pressure inside the second piston cylinder 40 decreases, the movable column 19 drives the rotating sleeve 39 and the second transmission roller 4 to move along the tangential direction, thereby adapting to reduce the tension of the copper foil body 3 during the winding process. This ensures that the winding tension of the ultra-thin copper foil is always stably maintained within the target micro-tension range within the gap between two step displacements (i.e., through the movement of the displacement component). This effectively counteracts the tension climbing trend caused by the slow increase in roll diameter, avoids the problems of foil wrinkles, plastic stretching and edge tearing caused by excessive tension, and ensures the continuous stability of the winding process and the surface quality of the finished foil. When the distance sensor 21 detects that the thickness of the copper foil body 3 wound by the winding roller 5 reaches the set threshold, the second motor starts and drives the threaded screw 49 to rotate at a constant speed. Through the transmission between the threaded sleeve and the second connecting column 14, the sliders 20 on both sides are pushed to slide smoothly backward along the second slide groove 24. This causes the winding roller 5 to move backward a set distance along the tangent direction of the copper foil winding, accurately compensating for the shortening of the material path caused by the increase in the roll diameter, so that the increased winding tension quickly drops back to the target reference value. At the same time, the displacement process adopts low-speed uniform operation to avoid tension impact caused by instantaneous displacement, which is suitable for the narrow tension tolerance window of the ultra-thin copper foil. While the threaded screw 49 rotates, the second worm 50 on its outer circumference rotates synchronously. Through the meshing and reversing transmission of the second worm wheel 51, the rotating rod 52, the second bevel gear 38 and the first bevel gear 37, the second rotating column 34 is driven to rotate inside the fixed shell 15. Then, through the reduction transmission of the first worm 35 and the first worm wheel 36, the first rotating column 16 is driven to rotate slowly, thereby driving the cylindrical block 9 inside the circular shell 7 to rotate synchronously. As the cylindrical block 9 rotates, the pressure block 10 on the outer wall presses inward against the first connecting column 8, pushing the first piston body 33 to slide inward along the first piston cylinder 32 to reset. The gas in the first piston cylinder 32 is then pushed into the second piston cylinder 40 through the air guide pipe 48. As the gas pressure inside the second piston cylinder 40 gradually rises, the second piston body 41 pushes the movable column 19 outward, causing the rotating sleeve 39 and the second transmission roller 4 to slide in the opposite direction along the first slide groove 17 to the initial equilibrium position, thus completing the reset of the entire floating assembly and reserving a complete buffer stroke for real-time tension compensation during the next stage of the micro-increase in roll diameter. After a single step displacement and floating reset are completed, the second motor stops running, and the winding process continues. The device repeats the cycle of "slight increase in roll diameter, real-time tension compensation by the floating component, roll diameter reaching the threshold, and step reset of the displacement component" until the winding roller 5 reaches the full roll outer diameter, triggering a stop and roll change. Throughout the process, the two-stage coordination of floating micro compensation and step coarse compensation keeps the winding tension stable within the safe range of the ultra-thin copper foil, effectively avoiding quality defects such as strip breakage, wrinkling, and stretching deformation.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A winding device for ultra-thin copper foil, comprising a winding frame (1), characterized in that, The inner walls of both sides of the winding frame (1) are rotatably connected to a first transmission roller (2) and a second transmission roller (4) for transmitting the copper foil body (3). Both sides of the winding frame (1) are provided with a rotating disk (25). One side of the rotating disk (25) is fixedly connected with a winding roller (5) for winding the copper foil body (3) by bolts. Both sides of the winding frame (1) are provided with displacement components for adjusting the position of the winding roller (5), and the tension of the copper foil body (3) is adjusted when winding by the displacement of the winding roller (5). A floating assembly for adjusting the position of the second drive roller (4) is provided on one side of the winding frame (1); The inner walls of both sides of the winding rack (1) are fixedly connected with horizontal plates (6), and the bottom outer wall of the horizontal plates (6) is fixedly connected with a distance sensor (21).

2. The winding device for ultra-thin copper foil according to claim 1, characterized in that, The displacement component includes a second slide groove (24) formed on the inner walls of both sides of the winding frame (1). A slider (20) is slidably connected inside the second slide groove (24). The rotating disk (25) is rotatably connected to the slider (20). A support frame (13) is fixedly connected to one side of the outer wall of the slider (20). A first motor (12) is fixedly connected to one side of the outer wall of the support frame (13). The output end of the first motor (12) is fixedly connected to a rotating disk (25).

3. A winding device for ultra-thin copper foil according to claim 2, characterized in that, The winding frame (1) has transmission housings (11) fixedly connected to both outer walls. A second motor is fixedly connected to one outer wall of the transmission housing (11). A threaded screw (49) is fixedly connected to the output end of the second motor. A threaded sleeve is threadedly connected to the outer circumference of the threaded screw (49). A second connecting post (14) is fixedly connected to one outer wall of the threaded sleeve. The other end of the second connecting post (14) is fixedly connected to one outer wall of the first motor (12). Guide posts (22) are fixedly connected to both inner walls of the other transmission housing (11). A guide cylinder (23) is slidably connected to the outer circumference of the guide post (22). The guide cylinder (23) is fixedly connected to the first motor (12) through another second connecting post (14). The first motor (12) is fixedly connected to one outer wall of another slider (20).

4. A winding device for ultra-thin copper foil according to claim 3, characterized in that, The floating assembly includes a second piston cylinder (40) disposed inside the winding frame (1). A second piston body (41) is slidably connected inside the second piston cylinder (40). A movable column (19) is fixedly connected to one side of the outer wall of the second piston body (41). A rotating sleeve (39) is fixedly connected to one end of the movable column (19) away from the second piston body (41). The rotating sleeve (39) is rotatably connected to the second transmission roller (4). A first sliding groove (17) is provided on both sides of the inner wall of the winding frame (1). The rotating sleeve (39) is slidably connected to the first sliding groove (17).

5. A winding device for ultra-thin copper foil according to claim 4, characterized in that, A circular shell (7) is fixedly connected to one side of the outer wall of the winding frame (1). A first piston cylinder (32) is fixedly connected to the inner circumference of the circular shell (7). A first piston body (33) is slidably connected inside the first piston cylinder (32). A first connecting post (8) is fixedly connected to one side of the outer wall of the first piston body (33). A duct pipe (48) is fixedly connected to one side of the outer wall of the second piston cylinder (40). One end of the duct pipe (48) away from the second piston cylinder (40) is connected to the first piston cylinder (32). A one-way air valve (47) is provided on the outer circumference of the duct pipe (48). A deceleration assembly and a swing assembly for opening the one-way air valve (47) are provided inside the circular shell (7).

6. A winding device for ultra-thin copper foil according to claim 5, characterized in that, The deceleration assembly includes a rotating ring (42) fixedly connected to the outer circumference of the first transmission roller (2). The outer circumference of the rotating ring (42) is fixedly connected with teeth (18). The rotating ring (42) meshes with a first gear (27) through the teeth (18). The first gear (27) is coaxially connected to a second gear (28). The outer circumference of the second gear (28) meshes with an eighth gear (29). The eighth gear (29) is coaxially connected to a third gear (30).

7. A winding device for ultra-thin copper foil according to claim 6, characterized in that, The swing assembly includes a fourth gear (31) that meshes with the third gear (30), a fifth gear (43) that is coaxially connected to the fourth gear (31), a sixth gear (44) that meshes with the outer circumferential wall of the fifth gear (43), a seventh gear (45) that meshes with the outer circumferential wall of the sixth gear (44), and a swing plate (46) that is coaxially connected to the seventh gear (45) for opening the one-way air valve (47).

8. A winding device for ultra-thin copper foil according to claim 7, characterized in that, The inner circumference of the circular shell (7) is fixedly connected to a stabilizing plate (26) for ensuring the stable rotation of the first gear (27), the second gear (28), the eighth gear (29), the third gear (30) and the fourth gear (31).

9. A winding device for ultra-thin copper foil according to claim 8, characterized in that, The outer circumferential wall of the threaded screw (49) is fixedly connected to a second worm (50), the outer circumferential wall of the second worm (50) is meshed with a second worm wheel (51), the inner circumferential wall of the second worm wheel (51) is fixedly connected to a rotating rod (52), one end of the rotating rod (52) is fixedly connected to a second bevel gear (38), the outer circumferential wall of the second bevel gear (38) is meshed with a first bevel gear (37), and a fixed shell (15) is fixedly connected to one side of one of the transmission shells (11).

10. A winding device for ultra-thin copper foil according to claim 9, characterized in that, A second rotating column (34) is fixedly connected to one side of the outer wall of the first bevel gear (37). A first worm (35) is fixedly connected to the outer circumference of the second rotating column (34). A first worm wheel (36) meshes with the outer circumference of the first worm (35). A first rotating column (16) is fixedly connected to the inner circumference of the first worm wheel (36). A cylindrical block (9) is fixedly connected to one end of the first rotating column (16) that extends into the interior of the circular shell (7). A pressure block (10) for pressing the first connecting column (8) is fixedly connected to the outer circumference of the cylindrical block (9).

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